#63686F

#63686F

Color Values

HEX

#63686F

RGB

99, 104, 111

HSL

215.0, 5.7%, 41.2%

HSV

215.0, 10.8%, 43.5%

CMYK

10.8%, 6.3%, 0.0%, 56.5%

OKLCH

0.5153 0.0127 256.7

Properties

Cool Dark Nearest: NCS S 6000-N Medium Dark Grey

Color Harmonies

Complementary

#63686F

#6F6A63

Analogous

#636E6F

#64636F

#63686F

Triadic

#63686F

#6F6368

#686F63

Split Complementary

#63686F

#6F6463

#6E6F63

Tetradic

#63686F

#6F636E

#6F6A63

#636F64

Color Blindness Simulation

Original

#63686F

Protanopia

#65656D

Deuteranopia

#65646D

Tritanopia

#636C6C

Achromatopsia

#676767

CSS Usage

background-color: #63686F;
color: #63686F;
border-color: #63686F;
Nearest Tailwind: Zinc 500 #71717A

Tailwind Shades

50
#F7F7F8
100
#ECEDEE
200
#D9DBDD
300
#BEC1C5
400
#9BA0A6
500
#787E87
600
#60656C
700
#4D5156
800
#3C3F43
900
#2E3033
950
#1D1E20

Contrast Checker

Text on white

5.61:1

AA Pass AAA Fail

Text on black

3.74:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026